export const initOnEvents = ['click', 'touchstart', 'keypress', 'keydown']

export const getAudioContext = () => {
  let audioCtx
  try {
    audioCtx = new (window.AudioContext || window.webkitAudioContext)()
  } catch {
    // AudioContext is not available.
  }
  return audioCtx
}

export const getAlertAudio = async (baseUrl = '', requestContext) => {
  const audioCtx = getAudioContext()
  const playSound = audioBuffer => {
    window.playAudioAlert = () => {
      if (audioCtx) {
        const source = audioCtx.createBufferSource()
        source.buffer = audioBuffer
        source.connect(audioCtx.destination)
        source.loop = false
        source.start()
      }
    }
  }

  if (audioCtx) {
    const { type = 'dashboard', alertTone = 'ding' } = requestContext || {}
    // const resourceUrl = `${baseUrl}/audio/${type}/${alertTone}.mp3`
    const resourceUrl = `${baseUrl}/api/v1/blobService/blobs/audio/${alertTone}.mp3`
    const audioRequest = new Request(resourceUrl)

    fetch(audioRequest)
      .then(response => response.arrayBuffer())
      .then(buffer => {
        audioCtx.decodeAudioData(buffer).then(playSound)
        return new Promise(res => res())
      })
      .catch(() => {
        // error
      })
  }
}
